Respostas

2013-11-24T14:06:16-02:00
(x+3)(x+2)=-9-3x
x^+2x+3x+6=-9-3x
x^+5x+3x+6+9=0
X^+8x+15=0
8^-4.1.15
64-60
4
x=-8+-raiz de 4 /2.1
x=-8+-2 /2
x'=-8+2 /2
x'=-6/2
x'=-3
x"=-8-2 /2
x"=-10/2
x=-5